update readme

Author: bryanmacfarlane

README.md

@@ -6,6 +6,8 @@ This template includes tests, linting, a validation workflow, publishing, and ve
 
 If you are new, there's also a simpler introduction.  See the [Hello World JavaScript Action](https://github.com/actions/hello-world-javascript-action)
 
+This walk through takes you through creation, testing and publishing the action.
+
 ## Create an action from this template
 
 Click the `Use this Template` and provide the new repo details for your action